Your geyser is one of the hardest-working appliances in your home — and one of the most expensive to replace if neglected. Here are 10 warning signs every South African homeowner should know.
1. Rusty or Discoloured Hot Water
If your hot water comes out brown or orange, your geyser tank may be corroding internally. This is a serious sign that your unit is nearing the end of its life. Contact a professional plumber immediately.
2. Strange Noises (Banging, Rumbling, Popping)
Sediment builds up at the bottom of geyser tanks over time. When water heats up and pushes through this layer, it creates loud banging or popping sounds. A flush and service can often solve this.
3. Water Pooling Around the Geyser
Any visible leaks or moisture around your geyser unit should be treated as an emergency. Leaks can cause ceiling damage, mould, and even electrical hazards. Call a plumber right away.
4. Inconsistent Water Temperature
If your shower alternates between scalding hot and cold, your thermostat or heating element may be failing. This is usually a straightforward repair.
5. No Hot Water at All
A complete loss of hot water could mean a tripped circuit breaker, a blown element, or a faulty thermostat. Check your DB board first — if the breaker looks fine, call a professional.
6. Geyser Is Over 10 Years Old
The average lifespan of a geyser in South Africa is 8–12 years. If yours is older, it’s worth having it inspected annually to avoid a sudden burst.
7. Rising Electricity Bills
A geyser that is losing efficiency will work harder and longer to heat water, directly increasing your electricity costs. A service or blanket installation can help reduce consumption.
8. Pressure Relief Valve Dripping
The pressure relief valve (PTR valve) is a safety device. If it’s constantly dripping or discharging water, the pressure inside your geyser is too high — a potentially dangerous situation.
9. Visible Corrosion or Rust on the Unit
External rust is a sign that water is escaping or that the unit is deteriorating. Don’t ignore visible corrosion on fittings, pipes, or the tank itself.
10. Slow Hot Water Recovery
If it takes much longer than it used to for hot water to reach your taps, your heating element or thermostat may be underperforming.
What To Do Next
If you recognise any of these signs, don’t wait for a full breakdown. At Repair On Call, our licensed plumbers serve Pretoria, Johannesburg, and surrounding areas across Gauteng. We offer fast response times, transparent pricing, and are approved by all major insurance companies in South Africa.
Call us today on 012 023 2715 or book an assessment online.
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